| dc.creator |
Öztürk, İrfan Ş. |
|
| dc.creator |
Burhan Navdar, M. |
|
| dc.creator |
AKTAŞ, BEKİR |
|
| dc.creator |
Öztürk, Hakan |
|
| dc.creator |
ÇEÇEN, Ferhat |
|
| dc.date |
2022-06-20T00:00:00Z |
|
| dc.date.accessioned |
2025-02-25T10:42:07Z |
|
| dc.date.available |
2025-02-25T10:42:07Z |
|
| dc.identifier |
fab8821b-6d12-4872-919f-4106b7e76a82 |
|
| dc.identifier |
10.1016/j.conbuildmat.2022.127563 |
|
| dc.identifier |
https://avesis.sdu.edu.tr/publication/details/fab8821b-6d12-4872-919f-4106b7e76a82/oai |
|
| dc.identifier.uri |
http://acikerisim.sdu.edu.tr/xmlui/handle/123456789/102009 |
|
| dc.description |
Due to today's high-frequency trainloads and wheel or rail irregularities, the railway system is more exposed to impact loading conditions. In this study, laminated carbon fiber reinforced polyurethane (L-CFRPU) products were used, with a new non-pre-stressed production process, to improve the impact damping characteristics of concrete railway sleepers. New designed LCR-6 type sleepers were compared with standard B70 type pre-stressed concrete sleepers by performing modal analysis before and after a 50 times repeated-330 kN impact loading procedure. This is the first study to compare new LCR-6 type sleepers with prestressed competitors after impact loads. According to the analysis results, FRF magnitude values decrease up to 83% lower in impacted LCR-6 type sleepers compared to impacted B70 type sleepers. After the impact loading procedure, the cracks formed in LCR-6 type sleepers closed and remained below 50-µm width, and according to the simultaneous mechanical test results, these few hairline cracks do not cause a significant mechanical capacity loss, while increasing the damping ratios by 274%. This advantage will be beneficial in extending the service life of sleepers and protecting other railway components from vibration and impact damage. Therefore, while the pre-stressed concrete sleepers have a negative course during their service life, the non-pre-stressed LCR type sleepers show a positive acceleration. |
|
| dc.language |
eng |
|
| dc.rights |
info:eu-repo/semantics/closedAccess |
|
| dc.title |
Comparative modal analysis of B70 and LCR-6 type railway sleepers after repeated impact loads |
|
| dc.type |
info:eu-repo/semantics/article |
|